Let's take a minute to talk about your medication. This is Zetia, and it can help improve your cholesterol levels. Most people tolerate Zetia well, but some side effects can occur, such as mild joint pains, cold-like symptoms, or diarrhea. These are normal and should go away. But, if these or other side effects become reasons you want to stop taking this medication, please talk with your doctor or pharmacist. In rare cases, serious side effects could occur, so call your doctor right away if you notice unusual changes to your body, like muscle pain or weakness, itching, or swelling of your face or lips. Also, women who are pregnant or breastfeeding should contact their doctor right away. To reduce side effects and interactions, it's important to let your doctor and pharmacist know before taking any new medications. Your doctor may order blood tests to make sure this medicine remains both safe and effective for you. For best results, continue taking Zetia, and follow the diet and exercise program recommended by your doctor.